Geologists supervise every stage of the drilling process for extracting gas and oil. They study and analyse rocks from the oil and gas wells in order to direct the drilling, and identify the rock formation into which they are drilling. They use specialised tests, rock-cutting data, wireline data, core samples and other measures to do this, analysing and evaluating this to inform the drilling process.
It's a high-pressure role, and geologists are responsible for liaising with mudloggers and drilling engineers to ensure the drilling goes off without a hitch, as well as making sure that it follows the correct health and safety procedures.
Ultimately, it's the geologist's responsibility to decide when drilling should be suspended or stopped.
They also compile reports and logs of the drilling process, as well as a final well report.
Geologists study and classify rock cuttings from oil and gas wells in order to determine how drilling should be started and how it should proceed.
They use specialised tests, core samples and rock-cutting data to build up knowledge of the structure being drilled.